Two images presented at same time

I am very new to directrt and I am setting up a force choice exp. that I need to display two pics at the same time and have the part. to press a key corresponding to the specific picture that they were asked about in the previous trial. How do I go about doing this? I have tried a couple different methods based on the sample help stuff, but nothing is making it look like I need it to. Please help, ASAP.

which part in particular are you having trouble with? should be able to do this with a [I]compound screen[/I] (see corresponding sample)--i.e., showing two stimuli back to back while using a [I]clear[/I] value of 0 on the second one (e.g., [I].25,.25,0[/I]) so that the first image stays on the screen with the second.